Re: [sv-bc] DataTypes: the reg datatype

From: Peter Flake <Peter.Flake@synopsys.com>
Date: Thu Nov 04 2004 - 08:04:23 PST

Dave,

The point about wires is that they have many more than four values, and
these new kind of wires need to connect to rtran gates.

That is why the 2/4 value distinction should be irrelevant. The wires
should only take on the "shape" and "naming" of the data type, not its
values. This is one justification for the wire <datatype> syntax in
Jonathan Bradford's proposal.

Regards,

Peter.

At 07:45 04/11/2004 -0800, Rich, Dave wrote:
>I feel that there is a big disconnect between the proposals from Cadence
>and SystemVerilog in that the 'unnamed 0,1,x,z data' type in the Cadence
>proposal is in deed what SystemVerilog called the 'reg datatype', and
>created a new name for that datatype, 'logic'. (Sometimes I get the funny
>feeling that we are debating Creationism versus Evolutionism)
>
>If we define the datatype on wires feature as simply a casting and type
>equivalence mechanism, then can limit the amount of changes needed to the LRM.
>
>
>Dave
>
>
>David Rich
>Verification Technologist
>Design Verification & Test Division
>Mentor Graphics Corporation
>dave_rich@mentor.com
>Office: 408 487-7206
>Cell: 510 589-2625
Received on Thu Nov 4 08:04:52 2004

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